DLV Series
1 3 A / 3 7 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
Physical
Dimensions
Case Material
Pin Material
Weight:
2" x 2" x 0.5" (50.8 x 50.8 x 12.7mm)
Diallyl phthalate, UL94V-0 rated
Brass, solder coated
TBD
Trimming Output Voltages
These DLV converters have a trim capability (pins 9 & 5) that allow users
to independently adjust the output voltages ±5%. (Note: pin 5 is an option,
see ordering information.) Adjustments to the output voltages can be accom-
plished via a trim pot, Figure 2, or a single fixed resistor as shown in Figures
3 and 4. A single fixed resistor can increase or decrease the output voltage
depending on its connection. Fixed resistors should have absolute TCR's less
than 100ppm/°C to minimize sensitivity to changes in temperature.
A single resistor connected from the Trim pin 9 to +Output (pin 8), see Figure
3, will decrease the lower output voltage. A resistor connected from Trim pin 9
to Output Return (pin 7) will increase the lower output voltage. See Figure 4.
Similarly, the higher output voltage can be adjusted using a single resistor
connected from the Trim (pin 5) to +Output (pin 6) or to Output Return (pin
7). See Figures 3 and 4.
Primary to Secondary Insulation Level
Operational
➀
All models are specified with external TBD ceramic output capacitors.
➁
See Technical Notes/Graphs for details.
➂
Devices may be order with opposite polarity. See Part Number Suffixes and Technical Notes
for details.
➃
Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter
may cause permanent damage.
➄
Output noise may be further reduced with the installation of additional external output
capacitors. See Technical Notes.
➅
On/Off control is designed to be driven with open collector or by appropriate voltage
levels. Voltages must be referenced to the –Input (pin 2).
➆
Demonstrated MTBF available on request.
➇
Trim function for the higher of two voltages available with "T" suffix. See Part Number
Suffixes and Technical Notes for details.
+3.3V TRIM *
5
6
20kΩ
5-22
TURNS
+3.3V
LOAD
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models
D2A Models
D48 Models
Transient (100msec): D12 Models
D24 Models
D48 Models
23 Volts
42 Volts
81 Volts
25 Volts
50 Volts
100 Volts
Input Current must be limited. TBD
minute duration. Fusing recommended.
6 Amps
4 Amps
2 Amps
Current limited. Devices can withstand
an indefinite output short circuit.
1
+INPUT
+3.3V OUTPUT
2
–INPUT
OUTPUT
RETURN
7
3
SYNC *
8
20kΩ
5-22
TURNS
+2.5V OUTPUT
+2.5V TRIM
9
+2.5V
LOAD
4
Input Reverse-Polarity Protection
➁
D12A Models
D24A Models
D48A Models
Output Current
➁
On/Off Control (Pin 4) Max. Voltages
Referenced to –Input (pin 2)
No Suffix
"N" Suffix
Sync Control (Pin 3) Max. Voltages
"S" Suffix
Storage Temperature
Lead Temperature
(Soldering, 10 sec.)
ON/OFF
CONTROL
* OPTIONAL PIN
Figure 2. Trim Connections Using A Trim Pot
+3.3V TRIM *
1
+INPUT
+3.3V OUTPUT
5
6
R
TRIM DOWN
+V
IN
+8 Volts
+5.7 Volts
–40 to +120°C
+300°C
2
–INPUT
OUTPUT
RETURN
7
+3.3V
LOAD
3
SYNC *
8
4
+2.5V
LOAD
+2.5V OUTPUT
+2.5V TRIM
9
R
TRIM DOWN
* OPTIONAL PIN
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifications Table is not implied, nor recommended.
ON/OFF
CONTROL
Figure 3. Trim Connections To Decrease Output Voltages Using Fixed Resistors
TECHNICAL NOTES
3.3 Volt Trim Down
On/Off Control
The primary-side, remote On/Off Control function (pin 4) can be specified to
operate with either positive or negative polarity. Positive polarity devices (no
suffix) are enabled when pin 4 is left open or pulled high (+TBDV to +TBDV
with respect to –Input). Positive polarity devices are disabled when pin 4 is
pulled low (0-0.8V with respect to –Input). Negative polarity devices are off
when pin 4 is high/open and on when pin 2 is pulled low.
For applications where power sequencing is critical, the DLV series can be
configured such that the On/Off Control pin will enable/disable only the higher
of the two output voltages. Contact DATEL for more information.
R
T
DOWN
(kΩ) =
O
O
2.5 Volt Trim Down
R
T
DOWN
(kΩ) =
O
O
1.8 Volt Trim Down
R
T
DOWN
(kΩ) =
O
O
4
L
N
L
1.73(V – 0.86)
N
1.8 – V
L
N
L
2.41(V – 1.18)
N
2.5 – V
L
N
L
3.48(V – 1.577)
N
3.3 – V
–25.5
–17.4
–14.17
MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
